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Pittsburgh, PA Weather on April 20
Pittsburgh hits 86°F on April 20, 1976 - nearly 20 degrees above average
April 20 has brought wildly variable weather to Pittsburgh over 43 years of records. The warmest April 20 on file occurred in 1976 when the city reached 86°F, a remarkable 18 degrees above the typical high of 68°F. In stark contrast, 2018 saw a rare late freeze with a low of 29°F, suggesting that late spring freezes remain a legitimate threat even as warmer records show the potential for early summer heat.
What to Expect on April 20
Planning for April 20th in Pittsburgh, PA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Frequently Asked Questions
What was the warmest April 20 ever in Pittsburgh?
The warmest April 20 in Pittsburgh, PA reached 86°F in 1976. That is 18°F above the long-term average high of 68°F.
What was the coldest April 20 ever in Pittsburgh?
The coldest April 20 in Pittsburgh, PA dropped to 29°F in 2018. That is 17°F below the long-term average low of 46°F.
What is the average temperature on April 20 in Pittsburgh?
On April 20, Pittsburgh averages a high of 68°F and a low of 46°F based on 43 years of NOAA weather observations from PITTSBURGH WSO CITY.
How many years of weather data are available for April 20 in Pittsburgh?
We have 43 years of weather records for April 20 in Pittsburgh, PA, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.
April 20 Weather History in Pittsburgh
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 69°F | 51°F | 0" | -- |
| 2024 | 60°F | 39°F | 0" | -- |
| 2023 | 83°F | 49°F | 0" | -- |
| 2022 | 57°F | 33°F | 0" | -- |
| 2021 | 67°F | 40°F | 0" | -- |
| 2020 | 60°F | 39°F | 0" | -- |
| 2019 | 69°F | 48°F | 3.2" | -- |
| 2018 | 53°F | 29°F | 0" | -- |
| 2017 | 78°F | 58°F | 2.08" | -- |
| 2016 | 74°F | 48°F | 0" | -- |
| 2015 | 74°F | 50°F | 0.61" | -- |
| 2014 | 73°F | 45°F | 0" | -- |
| 2013 | 47°F | 34°F | 0.03" | -- |
| 2012 | 77°F | 51°F | 0" | -- |
| 2011 | 70°F | 43°F | 0" | -- |
| 2010 | 64°F | 39°F | 0" | -- |
| 2009 | 54°F | 45°F | 1.19" | -- |
| 2008 | 63°F | 49°F | 1.24" | -- |
| 2007 | 71°F | 45°F | 0" | -- |
| 2006 | 78°F | 50°F | 0" | -- |
| 2005 | 79°F | 55°F | 0.46" | -- |
| 2004 | 71°F | 45°F | 0.03" | -- |
| 2003 | 78°F | 50°F | 0.13" | -- |
| 2002 | 70°F | 51°F | 0.76" | -- |
| 2001 | 54°F | 43°F | 1.17" | -- |
| 2000 | 77°F | 50°F | 0.69" | -- |
| 1999 | 53°F | 41°F | 0.66" | -- |
| 1998 | 66°F | 43°F | 2.51" | -- |
| 1997 | 64°F | 30°F | 0" | -- |
| 1996 | 74°F | 60°F | 0.71" | -- |
| 1995 | 60°F | 46°F | 0" | -- |
| 1994 | 64°F | 51°F | 0" | -- |
| 1993 | 71°F | 54°F | 0" | -- |
| 1992 | 85°F | 60°F | 0" | -- |
| 1979 | 71°F | 37°F | 0" | -- |
| 1978 | 50°F | 40°F | 0.15" | -- |
| 1977 | 83°F | 59°F | 0" | -- |
| 1976 | 86°F | 58°F | 0" | -- |
| 1975 | 48°F | 39°F | 0.03" | -- |
| 1974 | 72°F | 34°F | 0" | -- |
| 1973 | 84°F | 57°F | 0" | -- |
| 1972 | 62°F | 42°F | 1.47" | -- |
| 1971 | 75°F | 42°F | 0" | -- |
Based on 43 years of data from NOAA station: PITTSBURGH WSO CITY
How Has April 20 Changed?
The last decade has been 2.3°F cooler on this date compared to 20-30 years ago.
Monthly Climate Averages
Historical temperature and precipitation averages for Pittsburgh, PA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.